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First official contact with Islam was during the caliphate of Sayyidina Uthman, who sent an official Muslim envoy to Vietnam and Tang Dynasty China in 650.
There had been earlier contacts with Muslim traders en route to China.
Islam mainly grew in Vietnam through the influence of the Malay people.
After the 1975 establishment of the Socialist Republic of Vietnam, some of the 55,000 Muslim Chams emigrated to Malaysia. 1,750 were also accepted as immigrants by Yemen; most settled in Ta'izz. Those who remained did not suffer violent persecution, although their mosques were closed by the government.